Question

write the following in expanded form
(2x-5y)³-(2x+5y)³​

Answer 1

(2000x - 500y)-(20x+5y)

please mark it brainliest answer

Answer 2

Answer:

(-250y^3) + (- 120x^2y)

Step-by-step explanation:

(2x-5y)^3 - (2x+5y)^3

= (2x)^3 - (5y)^3 -3 × (2x)^2 × (5y) + 3 × (2x) × (5y)^2 -(2x+5y)^3

= 8x^3 - 125y^3 - 60x^2y + 150xy^2 -( 8x^3 + 125y^3 +60x^2y + 150xy^2)

= 8x^3 -125y^3 - 60x^2y +150xy^2 -8x^3 - 125 y^3 - 60x^2y - 150xy^2

= 8x^3 -8x^3 -125y^3 -125y^3 -60x^2y - 60x^2y +150xy^2 -150xy^2

= -250y^3 - 120x^2y

hope this will help you.